• Clinical and Experimental Pediatrics
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• v.49 no.6
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• pp.635-642
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• 2006

Purpose : The purpose of this study is to determine whether the new pulmonary valve reconstruction technique prevents short-term postoperative pulmonary regurgitation and improves early and mid-term clinical outcome. Methods : We reviewed postoperative echocardiographic variables and chest X-ray films from 31 patients who had undergone valve reconstruction(pulmonary valve reconstruction group : PVR) for the repair of TOF between April 2000 and August 2004. We compared the clinical data of these patients with those from 47 patients who had right ventricular outflow tract reconstruction with a monocusp valve(monocusp ventricular outflow patch group : MVOP) and 22 patients who had a transannular patch repair without a monocusp valve(transannular patch group : TAP). Results : In the PVR group, 25 patients(81 percent) had trivial or mild pulmonary regurgitation in their early post operative echocardiogram. Only 12 patients(26 percent) in the MVOP group had mild pulmonary regurgitation; and no patient in the TAP group had it. Pulmonary valve function was good in 96 percent of the PVR group, 36 percent of the MVOP group, and none in the TAP group in early post-operative echocardiogram. Follow-up echocardiogram(1, 2, 3, 4 years later) of the MVOP and TAP groups showed moderate pulmonary regurgitation and severely decreased valve function in almost all cases. However, in the PVR group 54 percent(16/28), 50 percent(14/28), 37 percent(9/24), and 31 percent(5/16) of the patients had trivial or mild pulmonary regurgitation 1, 2, 3 and 4 years after operation, respectively. The valve function remained good in 80 percent(24/30), 64 percent(18/28), 57 percent(12/21), and 31 percent(5/16) of the patients 1, 2, 3 and 4 years after operation respectively. Conclusion : Pulmonary valve reconstruction is effective in reducing pulmonary regurgitation and right ventricular dilatation in the repair of TOF, even though regurgitation increases with time. Further study is needed to determine long-term results.

• Proceedings of the KIEE Conference
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• 2009.07a
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• pp.1617_1618
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• 2009

의료용으로 사용되는 조명은 의사가 환자의 환부에 대해 정확히 판단할 수 있도록 조명으로서의 역할을 할 수 있어야 한다. 이러한 이유로 의료용에 사용되는 조명은 일반 조명으로 사용되는 광원에 비해 보다 특별한 사양들이 요구되어 진다. 기존의 수술용 무영등으로 사용되어 지는 광원은 대부분이 할로겐이나 제논 램프를 이용한 광원이었다. 할로겐이나 제논 램프의 경우는 100-1,000시간 정도의 수명을 가지고 있다. 이러한 광원들은 환자의 환부에 유해한 영향을 미칠 수 있는 UV 파장을 발생한다. 제논램프의 경우는 광원의 특성상 많은 양의 발열을 포함한다. 이러한 수명 및 발열 등의 문제를 가지고 있는 광원을 LED로 대체할 경우 LED가 가지고 있는 장점들을 수술용 무영등에 반영할 수 있다. LED광원은 다른 광원에 비해 장수명의 광원이며 인체에 유해한 파장을 거의 발생시키지 않는다. 또한 고연색성의 조명을 구현할 수 있으며 친환경적인 조명으로 구현할 수 있다. 이러한 LED의 장점을 고려하여 의료용 조명에 적용한다면 기존의 많은 의료용 조명을 LED로 대체할 수 있을 것이다.

• The Korean Journal of Pain
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• v.8 no.1
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• pp.51-54
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• 1995

척추마취는 국소마취제를 지주막하강에 주입하여 척수신경 전근과 후근을 차단하는 방법으로 하복부나 하지 수술 뿐 아니라 만성 통증과 암성 통증의 치료에도 이용되고 있는데 마취시간이나 제통시간의 연장 및 적절한 피부분절의 마취나 진통의 달성은 척추마취에서 중요한 사항이다. 본 연구에서는 morphine정주가 척추마취에 어떤 영향을 주는지 알아보기 위해 척추마취하에서 하지 수술을 받은 40명의 환자를 대상으로 척추마취를 시행한 80분에 척추마취 레벨, 수축기 및 이완기 혈압, 맥박 그리고 호흡수를 조사한후 morphine 10 mg을 정맥내로 주사후 20분후에 척추마취 레벨과 혈압, 맥박, 호흡수를 조사하여 다음과 같은 결과를 얻었다. 1) 척추마취 레벨은 morphine 투여진 $T_{7.5{\pm}0.32}$에 비해 morphine 투여 20분후에 $T_{6.0{\pm}0.31}$로 의의있게 상승하였다 (p<0.005). 2) 수축기 및 이완기 혈압과 맥박수는 morphine투여전과 투여후에 의의있는 변화가 없었다. 3) 호흡수는 morphine 투여전에 비해 투여후 감소가 있었다(p<0.005). 이상의 결과로 척추마취하에서 수술을 시행할 때나 통증치료시 전신적으로 morphne을 투여하여 마취와 진통부위를 넓일 수 있을 것으로 사료된다.

• Journal of Chest Surgery
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• v.30 no.11
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• pp.1142-1144
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• 1997

A case of fatal hematemesis due to an aberrant right subclavian arterioesophageal fistula which is a rare complication of the vascular ring is presented. A 42-year-old man with multiple injury by traffic accident presented severe upper gastrointestinal bleeding and was taken emergent operation. He was keeping tracheostomy tube and nasogastric tube for 7 weeks. We could find an aberrant right subclavian arterioesophageal fistula through left thoracotomy which was made by irritation of the prolonged nasogastric ube. We carried division of the aberrant right subclavian artery and fistulectomy. He was doing well postoperatively. But massive bleeding occurred at the fifth postoperative day. We performed emergent reoperation at CCU and found the tear point on the suture site of the aorta, which might be developed due to irritation of the chest tube andfor infection of the surrounding tissues. He was expired at the 8th postoperative day due to ischemic brain damage.

• Journal of Chest Surgery
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• v.30 no.4
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• pp.363-372
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• 1997

One hundred forty-four patients underwent operation for coarctation of the aorta at Seoul National University Children's Hospital between June 1986 and Decembsr 1995. Age ranged 0.1 to 191 months. Of these 78.5%(113) were infants. We classified the patients in terms of the anatomic location of coarctatiln and the associatCd anomalies(I[401= primary coarctation, 11(741=isthmic hypoplasia, lIIf30)=tubular hypoplasia involving transverse arch, Ar63 =with ventricular septal defect, B(28)=with other major cardiac defects). Subcalvian flap coarctoplasty(60), resection & anastomosis(44), extended aortoplasty(26), and onlay patch(14) were used as surgical methods. Overall operative mortality was 16.0(23/144)%. The hospital mortality was signific'antly higher in patheints with type 111, subtype B, younger age(under 3 months), extended aortoplasty(p(0.01). However, one-stage total repair in patients with subtype A or B were not found to be a predictor of hospital death. Restenosis had occured in 18 patients among 121 survivals(14. 9%). The mean follow-up period was 29.1 $\pm$28.8(0~129.2) months. Preoperative, immediate postoperative(within 3 months after operation) and postoperative(later than 6 months after operation) echocardiographic data on the dimensions of ascending aorta(AA), transverse arch(TA), an4 aortic isthmus(Al) were available in 77 patients(I=20, ll=42, 111= 15). Preoperative and postoperative aortic isthmus(All) and tra sverse arch indices(TAI), defined as TAIAA & AIIAA respectively, were compared. Immediate postoperative All in type 1, II and TAI in type 111 were significantly smaller in stenotic than non-stenotic group suggesting incomplete relieves of stenotic segment Younger age, subclavian coarctoplasty in patient under 3 months of age were round to be the risk factors for restenosis in this series. In conclusion, We found that aortic arch index and transverse arch index can be a useful tool to figure out the anatomic and clinical characteristics of the patients with aortic coarctation, and that anatomy, associated anomalies, age, and surgical methods may influence the surgical outcome of the coarctation repair.

• 대한두경부종양학회:학술대회논문집
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• 2005.11a
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• pp.215-215
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• 2005

• 대한미세수술학회:학술대회논문집
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• 1993.10a
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• pp.96.2-97
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• 1993

• 대한정형외과스포츠의학회:학술대회논문집
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• 2006.09a
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• pp.17-31
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• 2006

대개 근위부 족저근막염에 의해 야기되는 족저부 뒤꿈치 통증은 흔한 족부 질환이다. 족저근막염을 가진 대부분의 환자에서 비수술적인 치료는 효과적이지만, 통증 해결은 1년까지 요구된다. 수술이 요구된다면, 근막의 절반 이상을 유리하는 것은 기능적인 결손을 피하기 위해 배제되어야 한다. 외측 족저신경의 감압은 무지외전근의 기시부 주위에 통증이 있는 환자에서 추가된고 족저 근막 유리술의 정해진 일부분이 된다. 가끔, 족저부 뒤꿈치 골극 절제술이 필요하지만 이것은 시술의 이환율을 더하고 회복 시간을 지연시킨다.

• 대한미세수술학회:학술대회논문집
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• 1996.10a
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• pp.180.2-181
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• 1996

• Convergence Security Journal
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• v.19 no.5
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• pp.75-84
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• 2019

Recently, the value of video as an important data of medical information technology is increasing due to the feature of rich clinical information. On the other hand, video is also required to be de-identified as a medical image, but the existing methods are mainly specialized in the stereotyped data and still images, which makes it difficult to apply the existing methods to the video data. In this paper, we propose an automated system to index candidate elements of personal identification information on a frame basis to solve this problem. The proposed system performs indexing process using text and person detection after preprocessing by scene segmentation and color knowledge based method. The generated index information is provided as metadata according to the purpose of use. In order to verify the effectiveness of the proposed system, the indexing speed was measured using prototype implementation and real surgical video. As a result, the work speed was more than twice as fast as the playing time of the input video, and it was confirmed that the decision making was possible through the case of the production of surgical education contents.